I highly, highly recommend this product. I've taken mega-doses of vitamin c for decades, and have incorporated this into my arsenal for several years. These are relatively small tablets, and the tablets are manufactured in such a way that they break down quickly and easily. For this reason, and because they are non-acidic, they can be taken on an empty stomach if desired. They absorb well and never cause digestive upset. I give this particular Ester-C huge credit for my excellent health. I believe that nutritional supplements saved my life. I've tried a lot of products, and I know what works and what doesn't. My reviews are honest, straighforward, and based on my experience. Read my other reviews to quickly learn from my three decades of research and experimentation.